1116831661 has 8 divisors (see below), whose sum is σ = 1218663648. Its totient is φ = 1015050000.

The previous prime is 1116831641. The next prime is 1116831671. The reversal of 1116831661 is 1661386111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1116831661 - 2⁵ = 1116831629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1116831641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45511 + ... + 65611.

It is an arithmetic number, because the mean of its divisors is an integer number (152332956).

Almost surely, 2^1116831661 is an apocalyptic number.

1116831661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1116831661 is a deficient number, since it is larger than the sum of its proper divisors (101831987).

1116831661 is a wasteful number, since it uses less digits than its factorization.

1116831661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25163.

The product of its digits is 5184, while the sum is 34.

The square root of 1116831661 is about 33419.0314192378. The cubic root of 1116831661 is about 1037.5186347067.

The spelling of 1116831661 in words is "one billion, one hundred sixteen million, eight hundred thirty-one thousand, six hundred sixty-one".